| 1 | <div align="center">
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| 2 | <img height="170"
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| 3 | src="https://worldvectorlogo.com/logos/sass-1.svg">
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| 4 | <a href="https://github.com/webpack/webpack">
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| 5 | <img width="200" height="200"
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| 6 | src="https://webpack.js.org/assets/icon-square-big.svg">
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| 7 | </a>
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| 8 | </div>
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| 9 |
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| 10 | [![npm][npm]][npm-url]
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| 11 | [![node][node]][node-url]
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| 12 | [![deps][deps]][deps-url]
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| 13 | [![tests][tests]][tests-url]
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| 14 | [![coverage][cover]][cover-url]
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| 15 | [![chat][chat]][chat-url]
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| 16 | [![size][size]][size-url]
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| 17 |
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| 18 | # sass-loader
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| 19 |
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| 20 | Loads a Sass/SCSS file and compiles it to CSS.
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| 21 |
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| 22 | ## Getting Started
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| 23 |
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| 24 | To begin, you'll need to install `sass-loader`:
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| 25 |
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| 26 | ```console
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| 27 | npm install sass-loader sass webpack --save-dev
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| 28 | ```
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| 29 |
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| 30 | `sass-loader` requires you to install either [Dart Sass](https://github.com/sass/dart-sass) or [Node Sass](https://github.com/sass/node-sass) on your own (more documentation can be found below).
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| 31 |
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| 32 | This allows you to control the versions of all your dependencies, and to choose which Sass implementation to use.
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| 33 |
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| 34 | > ℹ️ We highly recommend using [Dart Sass](https://github.com/sass/dart-sass).
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| 35 |
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| 36 | > ⚠ [Node Sass](https://github.com/sass/node-sass) does not work with [Yarn PnP](https://classic.yarnpkg.com/en/docs/pnp/) feature and doesn't support [@use rule](https://sass-lang.com/documentation/at-rules/use).
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| 37 |
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| 38 | Chain the `sass-loader` with the [css-loader](https://github.com/webpack-contrib/css-loader) and the [style-loader](https://github.com/webpack-contrib/style-loader) to immediately apply all styles to the DOM or the [mini-css-extract-plugin](https://github.com/webpack-contrib/mini-css-extract-plugin) to extract it into a separate file.
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| 39 |
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| 40 | Then add the loader to your Webpack configuration. For example:
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| 41 |
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| 42 | **app.js**
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| 43 |
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| 44 | ```js
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| 45 | import "./style.scss";
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| 46 | ```
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| 47 |
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| 48 | **style.scss**
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| 49 |
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| 50 | ```scss
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| 51 | $body-color: red;
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| 52 |
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| 53 | body {
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| 54 | color: $body-color;
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| 55 | }
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| 56 | ```
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| 57 |
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| 58 | **webpack.config.js**
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| 59 |
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| 60 | ```js
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| 61 | module.exports = {
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| 62 | module: {
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| 63 | rules: [
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| 64 | {
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| 65 | test: /\.s[ac]ss$/i,
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| 66 | use: [
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| 67 | // Creates `style` nodes from JS strings
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| 68 | "style-loader",
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| 69 | // Translates CSS into CommonJS
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| 70 | "css-loader",
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| 71 | // Compiles Sass to CSS
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| 72 | "sass-loader",
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| 73 | ],
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| 74 | },
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| 75 | ],
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| 76 | },
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| 77 | };
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| 78 | ```
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| 79 |
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| 80 | Finally run `webpack` via your preferred method.
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| 81 |
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| 82 | ### Resolving `import` at-rules
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| 83 |
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| 84 | Webpack provides an [advanced mechanism to resolve files](https://webpack.js.org/concepts/module-resolution/).
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| 85 |
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| 86 | The `sass-loader` uses Sass's custom importer feature to pass all queries to the Webpack resolving engine.
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| 87 | Thus you can import your Sass modules from `node_modules`.
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| 88 |
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| 89 | ```scss
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| 90 | @import "bootstrap";
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| 91 | ```
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| 92 |
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| 93 | Using `~` is deprecated and can be removed from your code (**we recommend it**), but we still support it for historical reasons.
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| 94 | Why can you remove it? The loader will first try to resolve `@import` as a relative path. If it cannot be resolved, then the loader will try to resolve `@import` inside [`node_modules`](https://webpack.js.org/configuration/resolve/#resolvemodules).
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| 95 |
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| 96 | Prepending module paths with a `~` tells webpack to search through [`node_modules`](https://webpack.js.org/configuration/resolve/#resolvemodules).
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| 97 |
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| 98 | ```scss
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| 99 | @import "~bootstrap";
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| 100 | ```
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| 101 |
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| 102 | It's important to prepend it with only `~`, because `~/` resolves to the home directory.
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| 103 | Webpack needs to distinguish between `bootstrap` and `~bootstrap` because CSS and Sass files have no special syntax for importing relative files.
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| 104 | Writing `@import "style.scss"` is the same as `@import "./style.scss";`
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| 105 |
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| 106 | ### Problems with `url(...)`
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| 107 |
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| 108 | Since Sass implementations don't provide [url rewriting](https://github.com/sass/libsass/issues/532), all linked assets must be relative to the output.
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| 109 |
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| 110 | - If you pass the generated CSS on to the `css-loader`, all urls must be relative to the entry-file (e.g. `main.scss`).
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| 111 | - If you're just generating CSS without passing it to the `css-loader`, it must be relative to your web root.
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| 112 |
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| 113 | You will be disrupted by this first issue. It is natural to expect relative references to be resolved against the `.sass`/`.scss` file in which they are specified (like in regular `.css` files).
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| 114 |
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| 115 | Thankfully there are a two solutions to this problem:
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| 116 |
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| 117 | - Add the missing url rewriting using the [resolve-url-loader](https://github.com/bholloway/resolve-url-loader). Place it before `sass-loader` in the loader chain.
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| 118 | - Library authors usually provide a variable to modify the asset path. [bootstrap-sass](https://github.com/twbs/bootstrap-sass) for example has an `$icon-font-path`.
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| 119 |
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| 120 | ## Options
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| 121 |
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| 122 | | Name | Type | Default | Description |
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| 123 | | :---------------------------------------: | :------------------: | :-------------------------------------: | :---------------------------------------------------------------- |
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| 124 | | **[`implementation`](#implementation)** | `{Object\|String}` | `sass` | Setup Sass implementation to use. |
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| 125 | | **[`sassOptions`](#sassoptions)** | `{Object\|Function}` | defaults values for Sass implementation | Options for Sass. |
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| 126 | | **[`sourceMap`](#sourcemap)** | `{Boolean}` | `compiler.devtool` | Enables/Disables generation of source maps. |
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| 127 | | **[`additionalData`](#additionaldata)** | `{String\|Function}` | `undefined` | Prepends/Appends `Sass`/`SCSS` code before the actual entry file. |
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| 128 | | **[`webpackImporter`](#webpackimporter)** | `{Boolean}` | `true` | Enables/Disables the default Webpack importer. |
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| 129 |
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| 130 | ### `implementation`
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| 131 |
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| 132 | Type: `Object | String`
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| 133 | Default: `sass`
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| 134 |
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| 135 | The special `implementation` option determines which implementation of Sass to use.
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| 136 |
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| 137 | By default the loader resolve the implementation based on your dependencies.
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| 138 | Just add required implementation to `package.json` (`sass` or `node-sass` package) and install dependencies.
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| 139 |
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| 140 | Example where the `sass-loader` loader uses the `sass` (`dart-sass`) implementation:
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| 141 |
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| 142 | **package.json**
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| 143 |
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| 144 | ```json
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| 145 | {
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| 146 | "devDependencies": {
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| 147 | "sass-loader": "^7.2.0",
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| 148 | "sass": "^1.22.10"
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| 149 | }
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| 150 | }
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| 151 | ```
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| 152 |
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| 153 | Example where the `sass-loader` loader uses the `node-sass` implementation:
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| 154 |
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| 155 | **package.json**
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| 156 |
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| 157 | ```json
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| 158 | {
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| 159 | "devDependencies": {
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| 160 | "sass-loader": "^7.2.0",
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| 161 | "node-sass": "^5.0.0"
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| 162 | }
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| 163 | }
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| 164 | ```
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| 165 |
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| 166 | Beware the situation when `node-sass` and `sass` were installed! By default the `sass-loader` prefers `sass`.
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| 167 | In order to avoid this situation you can use the `implementation` option.
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| 168 |
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| 169 | The `implementation` options either accepts `sass` (`Dart Sass`) or `node-sass` as a module.
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| 170 |
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| 171 | #### Object
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| 172 |
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| 173 | For example, to use Dart Sass, you'd pass:
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| 174 |
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| 175 | ```js
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| 176 | module.exports = {
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| 177 | module: {
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| 178 | rules: [
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| 179 | {
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| 180 | test: /\.s[ac]ss$/i,
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| 181 | use: [
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| 182 | "style-loader",
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| 183 | "css-loader",
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| 184 | {
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| 185 | loader: "sass-loader",
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| 186 | options: {
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| 187 | // Prefer `dart-sass`
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| 188 | implementation: require("sass"),
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| 189 | },
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| 190 | },
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| 191 | ],
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| 192 | },
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| 193 | ],
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| 194 | },
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| 195 | };
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| 196 | ```
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| 197 |
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| 198 | #### String
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| 199 |
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| 200 | For example, to use Dart Sass, you'd pass:
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| 201 |
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| 202 | ```js
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| 203 | module.exports = {
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| 204 | module: {
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| 205 | rules: [
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| 206 | {
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| 207 | test: /\.s[ac]ss$/i,
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| 208 | use: [
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| 209 | "style-loader",
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| 210 | "css-loader",
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| 211 | {
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| 212 | loader: "sass-loader",
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| 213 | options: {
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| 214 | // Prefer `dart-sass`
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| 215 | implementation: require.resolve("sass"),
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| 216 | },
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| 217 | },
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| 218 | ],
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| 219 | },
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| 220 | ],
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| 221 | },
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| 222 | };
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| 223 | ```
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| 224 |
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| 225 | Note that when using `sass` (`Dart Sass`), **synchronous compilation is twice as fast as asynchronous compilation** by default, due to the overhead of asynchronous callbacks.
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| 226 | To avoid this overhead, you can use the [fibers](https://www.npmjs.com/package/fibers) package to call asynchronous importers from the synchronous code path.
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| 227 |
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| 228 | We automatically inject the [`fibers`](https://github.com/laverdet/node-fibers) package (setup `sassOptions.fiber`) for `Node.js` less v16.0.0 if is possible (i.e. you need install the [`fibers`](https://github.com/laverdet/node-fibers) package).
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| 229 |
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| 230 | > Fibers is not compatible with `Node.js` v16.0.0 or later ([see introduction to readme](https://github.com/laverdet/node-fibers)).
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| 231 |
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| 232 | **package.json**
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| 233 |
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| 234 | ```json
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| 235 | {
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| 236 | "devDependencies": {
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| 237 | "sass-loader": "^7.2.0",
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| 238 | "sass": "^1.22.10",
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| 239 | "fibers": "^4.0.1"
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| 240 | }
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| 241 | }
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| 242 | ```
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| 243 |
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| 244 | You can disable automatically injecting the [`fibers`](https://github.com/laverdet/node-fibers) package by passing a `false` value for the `sassOptions.fiber` option.
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| 245 |
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| 246 | **webpack.config.js**
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| 247 |
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| 248 | ```js
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| 249 | module.exports = {
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| 250 | module: {
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| 251 | rules: [
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| 252 | {
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| 253 | test: /\.s[ac]ss$/i,
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| 254 | use: [
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| 255 | "style-loader",
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| 256 | "css-loader",
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| 257 | {
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| 258 | loader: "sass-loader",
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| 259 | options: {
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| 260 | implementation: require("sass"),
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| 261 | sassOptions: {
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| 262 | fiber: false,
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| 263 | },
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| 264 | },
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| 265 | },
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| 266 | ],
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| 267 | },
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| 268 | ],
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| 269 | },
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| 270 | };
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| 271 | ```
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| 272 |
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| 273 | You can also pass the `fiber` value using this code:
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| 274 |
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| 275 | **webpack.config.js**
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| 276 |
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| 277 | ```js
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| 278 | module.exports = {
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| 279 | module: {
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| 280 | rules: [
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| 281 | {
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| 282 | test: /\.s[ac]ss$/i,
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| 283 | use: [
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| 284 | "style-loader",
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| 285 | "css-loader",
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| 286 | {
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| 287 | loader: "sass-loader",
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| 288 | options: {
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| 289 | implementation: require("sass"),
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| 290 | sassOptions: {
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| 291 | fiber: require("fibers"),
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| 292 | },
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| 293 | },
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| 294 | },
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| 295 | ],
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| 296 | },
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| 297 | ],
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| 298 | },
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| 299 | };
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| 300 | ```
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| 301 |
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| 302 | ### `sassOptions`
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| 303 |
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| 304 | Type: `Object|Function`
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| 305 | Default: defaults values for Sass implementation
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| 306 |
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| 307 | Options for [Dart Sass](http://sass-lang.com/dart-sass) or [Node Sass](https://github.com/sass/node-sass) implementation.
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| 308 |
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| 309 | > ℹ️ The `indentedSyntax` option has `true` value for the `sass` extension.
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| 310 |
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| 311 | > ℹ️ Options such as `data` and `file` are unavailable and will be ignored.
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| 312 |
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| 313 | > ℹ We recommend not to set the `outFile`, `sourceMapContents`, `sourceMapEmbed`, `sourceMapRoot` options because `sass-loader` automatically sets these options when the `sourceMap` option is `true`.
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| 314 |
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| 315 | > ℹ️ Access to the [loader context](https://webpack.js.org/api/loaders/#the-loader-context) inside the custom importer can be done using the `this.webpackLoaderContext` property.
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| 316 |
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| 317 | There is a slight difference between the `sass` (`dart-sass`) and `node-sass` options.
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| 318 |
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| 319 | Please consult documentation before using them:
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| 320 |
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| 321 | - [Dart Sass documentation](https://github.com/sass/dart-sass#javascript-api) for all available `sass` options.
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| 322 | - [Node Sass documentation](https://github.com/sass/node-sass/#options) for all available `node-sass` options.
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| 323 |
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| 324 | #### `Object`
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| 325 |
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| 326 | Use and object for the Sass implementation setup.
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| 327 |
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| 328 | **webpack.config.js**
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| 329 |
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| 330 | ```js
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| 331 | module.exports = {
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| 332 | module: {
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| 333 | rules: [
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| 334 | {
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| 335 | test: /\.s[ac]ss$/i,
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| 336 | use: [
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| 337 | "style-loader",
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| 338 | "css-loader",
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| 339 | {
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| 340 | loader: "sass-loader",
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| 341 | options: {
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| 342 | sassOptions: {
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| 343 | indentWidth: 4,
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| 344 | includePaths: ["absolute/path/a", "absolute/path/b"],
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| 345 | },
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| 346 | },
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| 347 | },
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| 348 | ],
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| 349 | },
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| 350 | ],
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| 351 | },
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| 352 | };
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| 353 | ```
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| 354 |
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| 355 | #### `Function`
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| 356 |
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| 357 | Allows to setup the Sass implementation by setting different options based on the loader context.
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| 358 |
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| 359 | ```js
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| 360 | module.exports = {
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| 361 | module: {
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| 362 | rules: [
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| 363 | {
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| 364 | test: /\.s[ac]ss$/i,
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| 365 | use: [
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| 366 | "style-loader",
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| 367 | "css-loader",
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| 368 | {
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| 369 | loader: "sass-loader",
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| 370 | options: {
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| 371 | sassOptions: (loaderContext) => {
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| 372 | // More information about available properties https://webpack.js.org/api/loaders/
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| 373 | const { resourcePath, rootContext } = loaderContext;
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| 374 | const relativePath = path.relative(rootContext, resourcePath);
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| 375 |
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| 376 | if (relativePath === "styles/foo.scss") {
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| 377 | return {
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| 378 | includePaths: ["absolute/path/c", "absolute/path/d"],
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| 379 | };
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| 380 | }
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| 381 |
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| 382 | return {
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| 383 | includePaths: ["absolute/path/a", "absolute/path/b"],
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| 384 | };
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| 385 | },
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| 386 | },
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| 387 | },
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| 388 | ],
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| 389 | },
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| 390 | ],
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| 391 | },
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| 392 | };
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| 393 | ```
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| 394 |
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| 395 | ### `sourceMap`
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| 396 |
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| 397 | Type: `Boolean`
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| 398 | Default: depends on the `compiler.devtool` value
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| 399 |
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| 400 | Enables/Disables generation of source maps.
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| 401 |
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| 402 | By default generation of source maps depends on the [`devtool`](https://webpack.js.org/configuration/devtool/) option.
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| 403 | All values enable source map generation except `eval` and `false` value.
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| 404 |
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| 405 | > ℹ If a `true` the `sourceMap`, `sourceMapRoot`, `sourceMapEmbed`, `sourceMapContents` and `omitSourceMapUrl` from `sassOptions` will be ignored.
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| 406 |
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| 407 | **webpack.config.js**
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| 408 |
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| 409 | ```js
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| 410 | module.exports = {
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| 411 | module: {
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| 412 | rules: [
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| 413 | {
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| 414 | test: /\.s[ac]ss$/i,
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| 415 | use: [
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| 416 | "style-loader",
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| 417 | {
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| 418 | loader: "css-loader",
|
|---|
| 419 | options: {
|
|---|
| 420 | sourceMap: true,
|
|---|
| 421 | },
|
|---|
| 422 | },
|
|---|
| 423 | {
|
|---|
| 424 | loader: "sass-loader",
|
|---|
| 425 | options: {
|
|---|
| 426 | sourceMap: true,
|
|---|
| 427 | },
|
|---|
| 428 | },
|
|---|
| 429 | ],
|
|---|
| 430 | },
|
|---|
| 431 | ],
|
|---|
| 432 | },
|
|---|
| 433 | };
|
|---|
| 434 | ```
|
|---|
| 435 |
|
|---|
| 436 | > ℹ In some rare cases `node-sass` can output invalid source maps (it is a `node-sass` bug).
|
|---|
| 437 |
|
|---|
| 438 | > > In order to avoid this, you can try to update `node-sass` to latest version or you can try to set within `sassOptions` the `outputStyle` option to `compressed`.
|
|---|
| 439 |
|
|---|
| 440 | **webpack.config.js**
|
|---|
| 441 |
|
|---|
| 442 | ```js
|
|---|
| 443 | module.exports = {
|
|---|
| 444 | module: {
|
|---|
| 445 | rules: [
|
|---|
| 446 | {
|
|---|
| 447 | test: /\.s[ac]ss$/i,
|
|---|
| 448 | use: [
|
|---|
| 449 | "style-loader",
|
|---|
| 450 | "css-loader",
|
|---|
| 451 | {
|
|---|
| 452 | loader: "sass-loader",
|
|---|
| 453 | options: {
|
|---|
| 454 | sourceMap: true,
|
|---|
| 455 | sassOptions: {
|
|---|
| 456 | outputStyle: "compressed",
|
|---|
| 457 | },
|
|---|
| 458 | },
|
|---|
| 459 | },
|
|---|
| 460 | ],
|
|---|
| 461 | },
|
|---|
| 462 | ],
|
|---|
| 463 | },
|
|---|
| 464 | };
|
|---|
| 465 | ```
|
|---|
| 466 |
|
|---|
| 467 | ### `additionalData`
|
|---|
| 468 |
|
|---|
| 469 | Type: `String|Function`
|
|---|
| 470 | Default: `undefined`
|
|---|
| 471 |
|
|---|
| 472 | Prepends `Sass`/`SCSS` code before the actual entry file.
|
|---|
| 473 | In this case, the `sass-loader` will not override the `data` option but just **prepend** the entry's content.
|
|---|
| 474 |
|
|---|
| 475 | This is especially useful when some of your Sass variables depend on the environment:
|
|---|
| 476 |
|
|---|
| 477 | #### `String`
|
|---|
| 478 |
|
|---|
| 479 | ```js
|
|---|
| 480 | module.exports = {
|
|---|
| 481 | module: {
|
|---|
| 482 | rules: [
|
|---|
| 483 | {
|
|---|
| 484 | test: /\.s[ac]ss$/i,
|
|---|
| 485 | use: [
|
|---|
| 486 | "style-loader",
|
|---|
| 487 | "css-loader",
|
|---|
| 488 | {
|
|---|
| 489 | loader: "sass-loader",
|
|---|
| 490 | options: {
|
|---|
| 491 | additionalData: "$env: " + process.env.NODE_ENV + ";",
|
|---|
| 492 | },
|
|---|
| 493 | },
|
|---|
| 494 | ],
|
|---|
| 495 | },
|
|---|
| 496 | ],
|
|---|
| 497 | },
|
|---|
| 498 | };
|
|---|
| 499 | ```
|
|---|
| 500 |
|
|---|
| 501 | #### `Function`
|
|---|
| 502 |
|
|---|
| 503 | ##### Sync
|
|---|
| 504 |
|
|---|
| 505 | ```js
|
|---|
| 506 | module.exports = {
|
|---|
| 507 | module: {
|
|---|
| 508 | rules: [
|
|---|
| 509 | {
|
|---|
| 510 | test: /\.s[ac]ss$/i,
|
|---|
| 511 | use: [
|
|---|
| 512 | "style-loader",
|
|---|
| 513 | "css-loader",
|
|---|
| 514 | {
|
|---|
| 515 | loader: "sass-loader",
|
|---|
| 516 | options: {
|
|---|
| 517 | additionalData: (content, loaderContext) => {
|
|---|
| 518 | // More information about available properties https://webpack.js.org/api/loaders/
|
|---|
| 519 | const { resourcePath, rootContext } = loaderContext;
|
|---|
| 520 | const relativePath = path.relative(rootContext, resourcePath);
|
|---|
| 521 |
|
|---|
| 522 | if (relativePath === "styles/foo.scss") {
|
|---|
| 523 | return "$value: 100px;" + content;
|
|---|
| 524 | }
|
|---|
| 525 |
|
|---|
| 526 | return "$value: 200px;" + content;
|
|---|
| 527 | },
|
|---|
| 528 | },
|
|---|
| 529 | },
|
|---|
| 530 | ],
|
|---|
| 531 | },
|
|---|
| 532 | ],
|
|---|
| 533 | },
|
|---|
| 534 | };
|
|---|
| 535 | ```
|
|---|
| 536 |
|
|---|
| 537 | ##### Async
|
|---|
| 538 |
|
|---|
| 539 | ```js
|
|---|
| 540 | module.exports = {
|
|---|
| 541 | module: {
|
|---|
| 542 | rules: [
|
|---|
| 543 | {
|
|---|
| 544 | test: /\.s[ac]ss$/i,
|
|---|
| 545 | use: [
|
|---|
| 546 | "style-loader",
|
|---|
| 547 | "css-loader",
|
|---|
| 548 | {
|
|---|
| 549 | loader: "sass-loader",
|
|---|
| 550 | options: {
|
|---|
| 551 | additionalData: async (content, loaderContext) => {
|
|---|
| 552 | // More information about available properties https://webpack.js.org/api/loaders/
|
|---|
| 553 | const { resourcePath, rootContext } = loaderContext;
|
|---|
| 554 | const relativePath = path.relative(rootContext, resourcePath);
|
|---|
| 555 |
|
|---|
| 556 | if (relativePath === "styles/foo.scss") {
|
|---|
| 557 | return "$value: 100px;" + content;
|
|---|
| 558 | }
|
|---|
| 559 |
|
|---|
| 560 | return "$value: 200px;" + content;
|
|---|
| 561 | },
|
|---|
| 562 | },
|
|---|
| 563 | },
|
|---|
| 564 | ],
|
|---|
| 565 | },
|
|---|
| 566 | ],
|
|---|
| 567 | },
|
|---|
| 568 | };
|
|---|
| 569 | ```
|
|---|
| 570 |
|
|---|
| 571 | ### `webpackImporter`
|
|---|
| 572 |
|
|---|
| 573 | Type: `Boolean`
|
|---|
| 574 | Default: `true`
|
|---|
| 575 |
|
|---|
| 576 | Enables/Disables the default Webpack importer.
|
|---|
| 577 |
|
|---|
| 578 | This can improve performance in some cases. Use it with caution because aliases and `@import` at-rules starting with `~` will not work.
|
|---|
| 579 | You can pass own `importer` to solve this (see [`importer docs`](https://github.com/sass/node-sass#importer--v200---experimental)).
|
|---|
| 580 |
|
|---|
| 581 | **webpack.config.js**
|
|---|
| 582 |
|
|---|
| 583 | ```js
|
|---|
| 584 | module.exports = {
|
|---|
| 585 | module: {
|
|---|
| 586 | rules: [
|
|---|
| 587 | {
|
|---|
| 588 | test: /\.s[ac]ss$/i,
|
|---|
| 589 | use: [
|
|---|
| 590 | "style-loader",
|
|---|
| 591 | "css-loader",
|
|---|
| 592 | {
|
|---|
| 593 | loader: "sass-loader",
|
|---|
| 594 | options: {
|
|---|
| 595 | webpackImporter: false,
|
|---|
| 596 | },
|
|---|
| 597 | },
|
|---|
| 598 | ],
|
|---|
| 599 | },
|
|---|
| 600 | ],
|
|---|
| 601 | },
|
|---|
| 602 | };
|
|---|
| 603 | ```
|
|---|
| 604 |
|
|---|
| 605 | ## Examples
|
|---|
| 606 |
|
|---|
| 607 | ### Extracts CSS into separate files
|
|---|
| 608 |
|
|---|
| 609 | For production builds it's recommended to extract the CSS from your bundle being able to use parallel loading of CSS/JS resources later on.
|
|---|
| 610 |
|
|---|
| 611 | There are two possibilities to extract a style sheet from the bundle:
|
|---|
| 612 |
|
|---|
| 613 | - [mini-css-extract-plugin](https://github.com/webpack-contrib/mini-css-extract-plugin)
|
|---|
| 614 | - [extract-loader](https://github.com/peerigon/extract-loader) (simpler, but specialized on the css-loader's output)
|
|---|
| 615 |
|
|---|
| 616 | **webpack.config.js**
|
|---|
| 617 |
|
|---|
| 618 | ```js
|
|---|
| 619 | const MiniCssExtractPlugin = require("mini-css-extract-plugin");
|
|---|
| 620 |
|
|---|
| 621 | module.exports = {
|
|---|
| 622 | module: {
|
|---|
| 623 | rules: [
|
|---|
| 624 | {
|
|---|
| 625 | test: /\.s[ac]ss$/i,
|
|---|
| 626 | use: [
|
|---|
| 627 | // fallback to style-loader in development
|
|---|
| 628 | process.env.NODE_ENV !== "production"
|
|---|
| 629 | ? "style-loader"
|
|---|
| 630 | : MiniCssExtractPlugin.loader,
|
|---|
| 631 | "css-loader",
|
|---|
| 632 | "sass-loader",
|
|---|
| 633 | ],
|
|---|
| 634 | },
|
|---|
| 635 | ],
|
|---|
| 636 | },
|
|---|
| 637 | plugins: [
|
|---|
| 638 | new MiniCssExtractPlugin({
|
|---|
| 639 | // Options similar to the same options in webpackOptions.output
|
|---|
| 640 | // both options are optional
|
|---|
| 641 | filename: "[name].css",
|
|---|
| 642 | chunkFilename: "[id].css",
|
|---|
| 643 | }),
|
|---|
| 644 | ],
|
|---|
| 645 | };
|
|---|
| 646 | ```
|
|---|
| 647 |
|
|---|
| 648 | ### Source maps
|
|---|
| 649 |
|
|---|
| 650 | Enables/Disables generation of source maps.
|
|---|
| 651 |
|
|---|
| 652 | To enable CSS source maps, you'll need to pass the `sourceMap` option to the `sass-loader` _and_ the css-loader.
|
|---|
| 653 |
|
|---|
| 654 | **webpack.config.js**
|
|---|
| 655 |
|
|---|
| 656 | ```javascript
|
|---|
| 657 | module.exports = {
|
|---|
| 658 | devtool: "source-map", // any "source-map"-like devtool is possible
|
|---|
| 659 | module: {
|
|---|
| 660 | rules: [
|
|---|
| 661 | {
|
|---|
| 662 | test: /\.s[ac]ss$/i,
|
|---|
| 663 | use: [
|
|---|
| 664 | "style-loader",
|
|---|
| 665 | {
|
|---|
| 666 | loader: "css-loader",
|
|---|
| 667 | options: {
|
|---|
| 668 | sourceMap: true,
|
|---|
| 669 | },
|
|---|
| 670 | },
|
|---|
| 671 | {
|
|---|
| 672 | loader: "sass-loader",
|
|---|
| 673 | options: {
|
|---|
| 674 | sourceMap: true,
|
|---|
| 675 | },
|
|---|
| 676 | },
|
|---|
| 677 | ],
|
|---|
| 678 | },
|
|---|
| 679 | ],
|
|---|
| 680 | },
|
|---|
| 681 | };
|
|---|
| 682 | ```
|
|---|
| 683 |
|
|---|
| 684 | If you want to edit the original Sass files inside Chrome, [there's a good blog post](https://medium.com/@toolmantim/getting-started-with-css-sourcemaps-and-in-browser-sass-editing-b4daab987fb0). Checkout [test/sourceMap](https://github.com/webpack-contrib/sass-loader/tree/master/test) for a running example.
|
|---|
| 685 |
|
|---|
| 686 | ## Contributing
|
|---|
| 687 |
|
|---|
| 688 | Please take a moment to read our contributing guidelines if you haven't yet done so.
|
|---|
| 689 |
|
|---|
| 690 | [CONTRIBUTING](./.github/CONTRIBUTING.md)
|
|---|
| 691 |
|
|---|
| 692 | ## License
|
|---|
| 693 |
|
|---|
| 694 | [MIT](./LICENSE)
|
|---|
| 695 |
|
|---|
| 696 | [npm]: https://img.shields.io/npm/v/sass-loader.svg
|
|---|
| 697 | [npm-url]: https://npmjs.com/package/sass-loader
|
|---|
| 698 | [node]: https://img.shields.io/node/v/sass-loader.svg
|
|---|
| 699 | [node-url]: https://nodejs.org
|
|---|
| 700 | [deps]: https://david-dm.org/webpack-contrib/sass-loader.svg
|
|---|
| 701 | [deps-url]: https://david-dm.org/webpack-contrib/sass-loader
|
|---|
| 702 | [tests]: https://github.com/webpack-contrib/sass-loader/workflows/sass-loader/badge.svg
|
|---|
| 703 | [tests-url]: https://github.com/webpack-contrib/sass-loader/actions
|
|---|
| 704 | [cover]: https://codecov.io/gh/webpack-contrib/sass-loader/branch/master/graph/badge.svg
|
|---|
| 705 | [cover-url]: https://codecov.io/gh/webpack-contrib/sass-loader
|
|---|
| 706 | [chat]: https://badges.gitter.im/webpack/webpack.svg
|
|---|
| 707 | [chat-url]: https://gitter.im/webpack/webpack
|
|---|
| 708 | [size]: https://packagephobia.now.sh/badge?p=sass-loader
|
|---|
| 709 | [size-url]: https://packagephobia.now.sh/result?p=sass-loader
|
|---|
